Improvement in fire-place stoves



4 Sheets--Sheet1.

H, P. 0 H M.

Fire- Place Stove.

Patented Mayn, 1875.

ATTORN EYS WITNESSES THE GRAPHIC CL'LPHOTO LITH.39 &4l PARK PLAGLNJ'.

4 Sheets-Sheet 4-.

H. P 0am.

Fire-Place Stove.

Patented May11,1875.

ITNESSES ATTORNEYS THE GRAPHI C C0.PHOTO-LITH.39&41 PARK PLAEEJLY.

'rniv'r HENRY r. OHM, or BALTIMORE, MARYLAND, ASSIGNOR or ONE-HALF HISRIGHT TO ALvA HUBBARD, or SAME rLAoE.

IMPROVEMENT IN FIRE-PLACE STOVES.

Specification forming part of Letters Patent No. 163,235, dated May 11,1875 application filed April 7, 1875.

To all whom it may concern:

Be it known that I, HENRY P. OHM, of Baltimore, in the county ofBaltimore and State of Maryland, have invented a new and valuableImprovement in Stoves; and I do hereby declare that the following is afull, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawings making a part ofthis specification, and to the letters and figures of reference markedthereon.

Figure 1 of the drawings is a representation of a front View of myimproved fire-place stove. Fig. 2 is a detail vertical section of aradiating column. Fig. 3 is a central vertical section taken throughline 00 or in Fig. 1. Fig. 4 is a rear view, showing the radiating-boxin section. Fig. 5 is a horizontal cross'section taken through line 3 yin Fig. 3.

' This invention has relation to that class of stoves which aredenominated fire-place heaters; and the nature of my invention consistsin outstanding heat-radiating columns forming part of the indirectdraft-flue and provided with deflectors for deflecting the heatedproducts of combustion outward against their swelled walls; also, in aheat-radiating box provided interiorly with divisions and forming acommunication between the combustionspace and the smoke-pipe, said boxbeing located at the rear of said space, out of sight and out of theway; and also in the novel con struct-ion of the parts, as will behereinafter more fully described.

In the annexed drawings, A designates the base-section of the stove, inwhich is the ashdrawer B, and on top of which an annular heat-radiatingflue, O, is formed, which communicates, by means of chambers a, with thelower ends of two columns, D D. The chamhers a are provided with doors afor allowing the removal of soot, 8m, which accumulate in them, and theash-pit is provided with doors b, in which registers are applied. Thecolumns D D are cones applied base to base, and at their largest partshorizontal deflectors c are applied, the object of which is to directthe descending and ascending currents of heated products outward, andthus utilize all the heat possible and make the columns,which stand wellout in the room, heat-radiators. E designates a radiator-box ofcrescentic form, the front ends of which are supported upon andcommunicate with the upper ends of the columns D D, and the rear part ofwhich is supported upon a bracket, 61. At the middle of the upper edgeof the radiator E is a smokepipe, E, which is provided with a dampercontrolled by a rod extended forward over the top of the stove. Theradiator E has a vertical partition, e, in it, on one side of the. pipeE, on each side of which are vertical plates f, which formdiving'passages for the products of combustion. The partition e dividesthe radiator into two chambers, F F, shown in Fig. 4.. G designates thesecond section of the stove, in which the fire-pot H is suspended, and Jdesignates the top section of the stove, forming. a combustion-chamber.Both sections G and J are provided with doors having mica lights inthem,which expose to view the fire in both sections. K is a short pipeleading from the interior of section J into the chamber F in theradiator, and provided with a damper, g, which, when opened, will give adirect draft to the smoke-pipe E. When the damper g is shut the productsof combustion pass through a short pipe, K, into the chamber F in theradiator E, thence down through the column D into chambers a, thencethrough the heat-radiating fine 0, thence up through the column D intothe chamber F, and finally out through the pipe E. The heated productsare thus conducted twice into the radiator E, through both columns D Dand through the base top-draft radiator C, before they are allowed toescape from pipe E. L designates the casing or jacket in which the stoveis placed for the purpose of forcing the heat into the room, and hdesignates a space which is formed by contracting the back of the baseA, for allowing the asoending currents of cool air to impinge againstthe overhanging bottom of the flue O, as shown by the arrows in Fig. 5.The air will thus be heated 011 its first entrance into the jacket L,and cold currents of air will be prevented from impinging on the wall ofsection G. The rear portion j of the top plate of section J is inclined,as shown in Fig. 5, for

the purpose of allowing the heated air from the back of the stove topass freely over it and into the room, and be subjected to the heat ofthis inclined plate j. The front part of plate j may be suitablyornamented to give a neat finish to the top of the stove. The upper partof the fire-pot H is a cylinder, the upper edge of which is flanged andsustained bythe flanges 'i, resting upon an annular perforated shelf,is. through which and also through an inclined ring, I, currents ofhighly-heated air are allowed to pass and mix with the gases in thecombustion-chamber in section J. The lower part of the fire-pot iscomposed of bars at, a ring, m, and a grate, N, which latter can betilted as well as shaken horizontally. At the front of the grate N is aloop or eye, t, and at the front of the base-section, just above theradiator O, is an opening, 22, provided with a door, 22. This opening isbelow the mica doors of the section G, and when a rod is introducedthrough it the attendant can see how to direct this rod into the loop twithout opening the doors of section G.

What I claim as new, and desire to secure by Letters Patent, is

1. Outstanding heat-radiatin g columns D D,

forming part of the indirect draft-flue, in combination with deflectorsc, substantially as described.

2. The heat-radiating box E, divided as described, in combination withthe combustionseotion J and the escape E, substantially as described.

3. Outlets K K, combined with the combustion-chamber section J andradiator E, divided as described.

4. Chambers at a, columns D D, flue O, and radiator E, combined withoutlet-pipes K K and damper g, substantially as described.

5. The cylindrical section H of the fire-pot, provided with the flange iresting on the annular perforated shelf k, in combination with theinclined perforated ring I and combustionchamber J, substantially asdescribed.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

HENRY P. OHM.

Witnesses:

GEORGE E. UPHAM, .Jos. B. Looms.

